Patents by Inventor Truett R. Thompson

Truett R. Thompson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Hydraulically actuated quick coupling device
    Patent number: 6866467
    Abstract: An attachment frame is connected with a loader arm of a work machine for connecting an implement thereto. A latch member is operatively associated with the attachment frame and movable between a disengaged position and an engaged position. A link has a first end portion connected to the latch member and a second end portion. A pivot member has a first end portion pivotally connected on the attachment frame, a second end portion pivotally connected on the second end portion of the link, and a central portion. A cylinder has a head end portion connected to the attachment frame and a rod end portion connected to the central portion of the pivot member. The cylinder is connected with a supply of hydraulic fluid so that upon pressurization thereof the cylinder is actuated for moving the latch member between the disengaged and engaged positions to respectively detach and attach the implement to the work machine.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: March 15, 2005
    Assignee: Caterpillar S.A.R.L.
    Inventors: Paul A. Dvorak, Gabriel G. Khairallah, Chin T. Khaw, Truett R. Thompson
  • Hydraulically actuated quick coupling device
    Publication number: 20020064446
    Abstract: An attachment frame is connected with a loader arm of a work machine for connecting an implement thereto. A latch member is operatively associated with the attachment frame and movable between a disengaged position and an engaged position. A link has a first end portion connected to the latch member and a second end portion. A pivot member has a first end portion pivotally connected on the attachment frame, a second end portion pivotally connected on the second end portion of the link, and a central portion. A cylinder has a head end portion connected to the attachment frame and a rod end portion connected to the central portion of the pivot member. The cylinder is connected with a supply of hydraulic fluid so that upon pressurization thereof the cylinder is actuated for moving the latch member between the disengaged and engaged positions to respectively detach and attach the implement to the work machine.
    Type: Application
    Filed: November 29, 2000
    Publication date: May 30, 2002
    Inventors: Paul A. Dvorak, Gabriel G. Khairallah, Chin T. Khaw, Truett R. Thompson